test case for LengthFilter

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@347996 13f79535-47bb-0310-9956-ffa450edef68

src/test/org/apache/lucene/analysis/TestLengthFilter.java

@@ -0,0 +1,35 @@
+package org.apache.lucene.analysis;
+
+/**
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import junit.framework.TestCase;
+
+import java.io.StringReader;
+
+public class TestLengthFilter extends TestCase {
+  
+  public void testFilter() throws Exception {
+    TokenStream stream = new WhitespaceTokenizer(
+        new StringReader("short toolong evenmuchlongertext a ab toolong foo"));
+    LengthFilter filter = new LengthFilter(stream, 2, 6);
+    assertEquals("short", filter.next().termText());
+    assertEquals("ab", filter.next().termText());
+    assertEquals("foo", filter.next().termText());
+    assertNull(filter.next());
+  }
+
+}